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Chile's Puyehue volcano erupts

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A cloud of ash billows from Puyehue volcano in southern Chile on June 5. The volcano erupted for the first time in half a century on June 4, prompting evacuations of 3,500 people as it sent a cloud of ash that reached Argentina. The ash spread across the Pacific, prompting authorities to suspend flights in Australia and New Zealand. Claudio Santana/AFP/Getty Images/Newscom

Lightning flashes in a cloud of ash rising from Puyehue volcano on June 5. Claudio Santana/AFP/Getty Images/Newscom

Puyehue volcano spews a cloud of ash on June 5. Claudio Santana/AFP/Getty Images/Newscom

Ash erupts from Puyehue volcano on June 5. Chilean Air Force/AFP/Getty Images/Newscom

A military flies in front of an ash cloud above Puyehue volcano near Rininahue village, Chile, on June 5. Claudio Santana/AFP/Getty Images/Newscom

Lightning strikes over Puyehue volcano on June 12. Chilean officials ordered most residents already evacuated from homes near the erupting volcano to stay in shelters and with family and friends due to the threat of deadly landslides. Alvaro Vidal/AP

Lake Nahuel Huapi is covered with volcanic ash near San Carlos de Bariloche, Rio Negro, Argentina, on June 8. Francisco Ramos Mejia/AFP/Getty Images/Newscom

A road is blanketed in volcanic ash in Villa La Angostura in southern Argentina on June 14. Scientists say the volcano's eruption has diminished, although they warn that ash likely will keep spewing out for at least several more days. The sign reads 'Attention, children playing.' Federico Grosso/AP

A sheep stands in a field covered in volcanic ash near Pilcaniyeu in southern Argentina on June 14. Photos Patagonia/AP

Footprints in volcanic ash have accumulated near the Puyehue volcano on June 7. Claudio Santana/AFP/Getty Images/Newscom

A man wearing a protective mask carries his son on his shoulders on a street blanketed in volcanic ash in Villa La Angostura in southern Argentina on June 14. Federico Grosso/AP

People sleep at Jorge Newbery airport, where flights were canceled due to an ash cloud that reached Buenos Aires from the Chilean Puyehue volcano, grounding air travel in Buenos Aires, Argentina, on June 14. The wind carried volcanic ash across the Andes to Argentina resulting in the closing of airports and the cancellation of flights. Natacha Pisarenko/AP

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